[MIPS] MTX-1: Add GPIO system button
This patch adds support for the GPIO connected system button on the MTX-1
boards. Default configuration is updated accordingly.
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/au1000/mtx-1/platform.c b/arch/mips/au1000/mtx-1/platform.c
index 49c0fb4..ce8637b 100644
--- a/arch/mips/au1000/mtx-1/platform.c
+++ b/arch/mips/au1000/mtx-1/platform.c
@@ -22,9 +22,32 @@
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
+#include <linux/gpio_keys.h>
+#include <linux/input.h>
#include <asm/gpio.h>
+static struct gpio_keys_button mtx1_gpio_button[] = {
+ {
+ .gpio = 207,
+ .code = BTN_0,
+ .desc = "System button",
+ }
+};
+
+static struct gpio_keys_platform_data mtx1_buttons_data = {
+ .buttons = mtx1_gpio_button,
+ .nbuttons = ARRAY_SIZE(mtx1_gpio_button),
+};
+
+static struct platform_device mtx1_button = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &mtx1_buttons_data,
+ }
+};
+
static struct resource mtx1_wdt_res[] = {
[0] = {
.start = 15,
@@ -66,11 +89,13 @@
static struct __initdata platform_device * mtx1_devs[] = {
&mtx1_gpio_leds,
- &mtx1_wdt
+ &mtx1_wdt,
+ &mtx1_button
};
static int __init mtx1_register_devices(void)
{
+ gpio_direction_input(207);
return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs));
}
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index be82f12..3a34208 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -1616,6 +1616,7 @@
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
+CONFIG_KEYBOARD_GPIO=y
CONFIG_KEYBOARD_SUNKBD=m
CONFIG_KEYBOARD_LKKBD=m
CONFIG_KEYBOARD_XTKBD=m